Elevator



'.l. F. MOODY Mars 3| ELEVA'I'OR Filed Dec.

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UNITED STATES` JOSEPH F. MOODY, OF TULSA, OKLAHOMA.

ELEvAToR.

Application filed December 24, 1923. Serial No. 682,434.A

To all whom it may concern.'

Be it known that I, JOSEPH F. MOODY, a citizen of the United States,residing at Tulsa, in the county of Tulsa and State of Oklahoma, haveinvented new and useful Improvements in Elevators, of which thefollowing is a' specification.

This invention relates to elevators especially adapted for use in oilwell operations.

An important object of this invention is to provide. an elevator whichmay be conveniently attached to a sucker rod or the like or removedtherefrom withoutendangering the operator.

A further object is to provide an elevator wherein the manuallycontrolled knob for moving the rod confining dogs toinoperaytiveposition is arranged at the rear'side of the elevatorand formsaconvenient'gripping means whereby the elevator may be either attachedto or removed from a sucker rod or the like.

A further object is to provide an elevator wherein rod confining dogsmover to operative position immediately land automatically upon theentrance of the rod into the elevator so that the possibility of theelevator becoming accidentally disconnected from the rod is reduced to aminimum.

A further object is to provide an elevator of the character specifiedwhich is of highly simplified construction, durable in use and cheap tomanufacture.

i Other objects and advantages will be apparent during the course of thefollowing description.

Y In the accompanying drawing forming a part of this application and inwhich like numerals are employed to designate like parts throughoutV thesame, I Y

Figure 1 is a fragmentary rearelevation of the elevator.

Figure 2 is a horizontal sectional vie taken on line 2-'2 of Figure 1.

Figure 3 is a vertical transverse sectional view taken online 3--3 ofFigure 2.

Fig. 4 is a perspective of a cam embodied in the invention.

In the drawing wherein for the purpose of illustration is shown apreferred embodiment of the invention the numeral 5 designates a bodyhaving its opposite sides,A provided with the usual trunnions 6 towhichY the U-shaped attaching member 7 is connected. Inv carrying outthe invention the body 5 is preferably in the nature of a casting and isprovided with upper and lower walls 8 and 9 respectively having slots 10lwhich extend out through the forward side of the body forA thereception of a sucker rod or the like.

Figure 2 plainly illustrates that the for'- ward side of the body iscurved inwardly at opposite sides of the openings 10 as indicated at 11to guide the rod or the like into the openings.

Also, the bodyis provided on opposite sides of the slots 10 with dogs 12vertically pivoted as indicated at 13 to the forward portion of thebody. It might be said that the dogs 12 are located in recesses 14 atopposite sides of the opening in the body and the dogs are urged intothe opening/in the body by means of springs16. Y The ends of the springsare seated in sockets 17 vand 18 in the opposed sides of the dogs andthe inner walls of the sockets 14. Of course'when the dogs are moved totheir advanced positions by the springs 16 the sucker rod is securelyand positively held in the opening in the body.

The dogs 12 may to their inoperative positions simultaneous- `ly by theturning of a cam 2O having oppositely directed lobes providedwithrounded edges to contact with the angularly directed be movedoutwardly orA rear end portions 22 ofi Shanks 24 at the rear portions ofthe dogs.. The lobe 20 may be manually turned by a knob 25 having ashank 26 connected to the. intermediate portion of the cam by al pin orother suitable Y vfastening device. The shank 26 is in vturn rotatablyconnected to front and rear connecting posts 27'and`28. Itl will be seenthat the fastening pin or key 30 holds the shank 26y againstlongitudinal movement and consequently the cam is held betweenthe posts27 and 28and therefore constantly in an operative position.

Figure 2 illustrates that the forward side of the connecting post 27 isconcaved for contact with the sucker rod and consequently the post 27forms the rear wall of the opening in the body. Also, the upper andlower walls 8 and 9 respectively'are provided with transverse slots 34to receive the end portions of the cam when thecam is in its inoperativeposition.

When it is desired to attach the elevator to a sucker rod or the like itis merely neces.- sary for the operator to grasp the knobV 25 and swingthe elevator so that the sucker rod is positioned in the opening 10. Asthe sucker rod enters the opening the dogs 12 are simultaneously swungoutwardly and immediately upon tlie passage of the sucker rod thesprings 16 will return the -dogs to their operative positions. Theaccidental disconnection of the elevator' sucker rod is positivelyprevented and the job of removing the sucker rod from the well mayproceedfsafely. When the cups have been renewed or other necessaryrepair made the sucker rod1 may be returned to the well.

wWhen it is desired to` detach the elevator from the'sucker rod it ismerely necessary for the operator to grasp the knob 25 and turn thesaine so thatthe longitudinally curved edgesl of the caniwill engage theangularly directed end portions of the shanks 24 and thereby move thedogs l2 to their inoperative positions. Then the dogs l2 are moved toftheir inoperative positions in the sockets 141 the operator may pullrearwardly on the knob 25 to swing the elevator out of engagement withthe box of the sucker rod. Attention is directed to the fact that itis'not necessary for the operator to grasp any other part of theelevator when it isdesired to iemove'the elevator' from supportingengagement with sucker rod and thus the possibility of injury to thehands of the operator is reduced to a minimum.

Incarrying out the invention it is not necessary to use the full widthofrthe shanks 24 and the same may be scalloped or cut away at certainplaces and itis to be'understood that certain minor changes inarrangement and' constructionof parts maybe made as will remain with-inthe spirit of the invention and the scope of what is claimed.

I claim 1.An elevator comprising a hollow bod-y having upper and lowerwalls provided with slots, dogs pivoted at their forward ends withinsaid body and having their rear portions formed with shanks, a campositioned between said shanks, and a-knob secured to said camintermediate the ends thereof and forming a turning means for the camand a gripping means for the elevator. v

2. An elevator comprising 'a body having an opening and sockets onopposite sides of said opening, spring actuated dogs pivoted from' theVin said sockets and adapted to extend into said opening, the rearportfions'of said dogs being provided with Shanks, a cam havingoppositely directed lobes adapted to engage said4 Shanks, anda knobhaving a shank connected to the intermediate portion of said cam.

3. An elevator comprising a body having an opening and sockets onopposite sides of said opening, spring actuated dogs pivoted in saidsockets and adapted to extend into said, opening, the rear portions ofsaid dogs being provided with shanks, a cainhaving oppositely directedlobes adapted to engage said shanks, and a knobhaving a shank connectedto the intermediate portion of said cam, said body being provided withspaced front and rear posts between which said cam is arranged and theshank of said knob being rotatably connected to said posts.

4. An elevator comprising a body .having upper and lower walls providedwith slots, dogs pivoted between said lupper and lower walls and havingtheir rear Vportions formed with Shanks, a cam having oppositelydirected lobes adapted to engage said' shanks to separate saiddogs, saidbody being provided with strengthening and connecting posts joined attheir ends to the upper and lower walls ofthe body and beingarranged atopposite sides of said cam, a Aknob having a-shank securely connected tosaid cam and being rotatably connected' to said posts, the

forward side of one ofsaid posts b-ei-ngrcon- .I

cave for contact'by acylindrical body.-

5.1 An elevator comprising a. body having an opening, a pair of dogsfforclosing said opening, a cam for movingY said dogs to one position, aknob connected Vto said cam and adapted tobe turned -for actuatingvsaid-cam, said knobconstituting ameans whereby the elevator may begrasped manually.

6. Anelevator comprising. ya body having elevator f may be graspedYn'ianualfly, sai-d `knob being,.located attheside'Y of saidlbodyopposite said opening. f

'In testimonywvhereof I my signa-ture.

f JOSEPH rF.Y MGODY.

.anropening, Aa pair of dogs foiclosing. said f

